U.S. patent application number 14/512576 was filed with the patent office on 2015-05-28 for device and chip for controlling charging, and user terminal.
The applicant listed for this patent is Spreadtrum Communications (Shanghai) Co., Ltd.. Invention is credited to Ji MA, Fuqiang ZHANG.
Application Number | 20150145468 14/512576 |
Document ID | / |
Family ID | 53182092 |
Filed Date | 2015-05-28 |
United States Patent
Application |
20150145468 |
Kind Code |
A1 |
MA; Ji ; et al. |
May 28, 2015 |
DEVICE AND CHIP FOR CONTROLLING CHARGING, AND USER TERMINAL
Abstract
A device, a system and a chip for controlling charging, and a
user terminal are provided. The device for controlling charging
includes: a battery detection circuit, a charging control circuit,
a charging circuit and a charging interface circuit, wherein the
charging circuit is connected with a battery, the battery detection
circuit, the charging control circuit and the charging interface
circuit respectively; the battery detection circuit is adapted for
obtaining a voltage value of the battery; the charging interface
circuit is connected with a charging power supply; and the charging
control circuit is adapted for transmitting a charging control
signal for increasing a charging current of the charging power
supply through the charging interface circuit when the battery
detection circuit detects that the voltage value of the battery is
lower than a preset threshold value. The device for controlling
charging can improve charging speed when battery power is low.
Inventors: |
MA; Ji; (Shanghai, CN)
; ZHANG; Fuqiang; (Shanghai, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Spreadtrum Communications (Shanghai) Co., Ltd. |
Shanghai |
|
CN |
|
|
Family ID: |
53182092 |
Appl. No.: |
14/512576 |
Filed: |
October 13, 2014 |
Current U.S.
Class: |
320/107 |
Current CPC
Class: |
H02J 7/00 20130101; H02J
7/007 20130101 |
Class at
Publication: |
320/107 |
International
Class: |
H02J 7/00 20060101
H02J007/00 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 27, 2013 |
CN |
201310618021.5 |
Claims
1. A device for controlling charging, comprising: a battery
detection circuit, a charging control circuit, a charging circuit
and a charging interface circuit, wherein the charging circuit is
connected with a battery, the battery detection circuit, the
charging control circuit and the charging interface circuit
respectively, and is adapted for charging the battery and supplying
power to the battery detection circuit, the charging control
circuit and the charging interface circuit; the battery detection
circuit is connected with the battery, and is adapted for obtaining
a voltage value of the battery; the charging interface circuit is
connected with a charging power supply; and the charging control
circuit is connected with the battery detection circuit and the
charging interface circuit respectively, and is adapted for
transmitting a charging control signal for increasing a charging
current of the charging power supply through the charging interface
circuit when the battery detection circuit detects that the voltage
value of the battery is lower than a preset threshold value.
2. The device according to claim 1, further comprising: a charging
detection circuit, wherein the charging detection circuit is
connected with the charging circuit and the charging interface
circuit, and is adapted for obtaining working power from the
charging circuit, and obtaining a device type of the charging power
supply which is connected with the charging interface circuit.
3. The device according to claim 2, wherein the charging control
circuit is adapted for, when the battery detection circuit detects
that the voltage value of the battery is lower than the preset
threshold value, transmitting the charging control signal for
increasing the charging current of the charging power supply to the
charging interface circuit based on the device type of the charging
power supply.
4. The device according to claim 2, wherein the charging interface
circuit is a USB charging interface circuit.
5. The device according to claim 4, wherein the charging detection
circuit is connected with a data line of the USB charging interface
circuit.
6. The device according to claim 4, wherein the charging control
circuit is connected with a data line of the USB charging interface
circuit.
7. The device according to claim 4, wherein the charging circuit is
connected with a power line of the USB charging interface
circuit.
8. The device according to claim 1, wherein the preset threshold
value is a start voltage value of a system.
9. A chip for controlling charging, comprising: a device for
controlling charging, wherein the device for controlling charging
comprises a battery detection circuit, a charging control circuit,
a charging circuit and a charging interface circuit; the charging
circuit is connected with a battery, the battery detection circuit,
the charging control circuit and the charging interface circuit
respectively, and is adapted for charging the battery and supplying
power to the battery detection circuit, the charging control
circuit and the charging interface circuit; the battery detection
circuit is connected with the battery, and is adapted for obtaining
a voltage value of the battery; the charging interface circuit is
connected with a charging power supply; and the charging control
circuit is connected with the battery detection circuit and the
charging interface circuit respectively, and is adapted for
transmitting a charging control signal for increasing a charging
current of the charging power supply through the charging interface
circuit when the battery detection circuit detects that the voltage
value of the battery is lower than a preset threshold value.
10. The chip according to claim 9, further comprising: a charging
detection circuit, wherein the charging detection circuit is
connected with the charging circuit and the charging interface
circuit, and is adapted for obtaining working power from the
charging circuit, and obtaining a device type of the charging power
supply which is connected with the charging interface circuit.
11. The chip according to claim 10, wherein the charging control
circuit is adapted for, when the battery detection circuit detects
that the voltage value of the battery is lower than the preset
threshold value, transmitting the charging control signal for
increasing the charging current of the charging power supply to the
charging interface circuit based on the device type of the charging
power supply.
12. The chip according to claim 9, wherein the preset threshold
value is a start voltage value of a system.
13. A user terminal, comprising: a device for controlling charging,
a battery, a power management device and a processor, wherein the
device for controlling charging comprises a battery detection
circuit, a charging control circuit, a charging circuit and a
charging interface circuit; the charging circuit is connected with
a battery, the battery detection circuit, the charging control
circuit and the charging interface circuit respectively, and is
adapted for charging the battery and supplying power to the battery
detection circuit, the charging control circuit and the charging
interface circuit; the battery detection circuit is connected with
the battery, and is adapted for obtaining a voltage value of the
battery; the charging interface circuit is connected with a
charging power supply; the charging control circuit is connected
with the battery detection circuit and the charging interface
circuit respectively, and is adapted for transmitting a charging
control signal for increasing a charging current of the charging
power supply through the charging interface circuit when the
battery detection circuit detects that the voltage value of the
battery is lower than a preset threshold value; the device for
controlling charging is connected with the battery, and is adapted
for controlling a charging process of the battery; the battery is
connected with the power management device, and is adapted for
providing power for the power management device; and the power
management device is connected with the processor, and is adapted
for managing currents and voltages provided by the battery based on
a control signal of the processor.
14. The user terminal according to claim 13, further comprising: a
charging detection circuit, wherein the charging detection circuit
is connected with the charging circuit and the charging interface
circuit, and is adapted for obtaining working power from the
charging circuit, and obtaining a device type of the charging power
supply which is connected with the charging interface circuit.
15. The user terminal according to claim 14, wherein the charging
control circuit is adapted for, when the battery detection circuit
detects that the voltage value of the battery is lower than the
preset threshold value, transmitting the charging control signal
for increasing the charging current of the charging power supply to
the charging interface circuit based on the device type of the
charging power supply.
16. The user terminal according to claim 14, wherein the charging
interface circuit is a USB charging interface circuit.
17. The user terminal according to claim 16, wherein the charging
detection circuit is connected with a data line of the USB charging
interface circuit.
18. The user terminal according to claim 16, wherein the charging
control circuit is connected with a data line of the USB charging
interface circuit.
19. The user terminal according to claim 16, wherein the charging
circuit is connected with a power line of the USB charging
interface circuit.
20. The user terminal according to claim 13, wherein the preset
threshold value is a start voltage value of a system.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] The present application claims priority to Chinese patent
application No. 201310618021.5, filed on Nov. 27, 2013, and
entitled "DEVICE, SYSTEM AND CHIP FOR CONTROLLING CHARGING, AND
USER TERMINAL", the entire disclosure of which is incorporated
herein by reference.
TECHNICAL FIELD
[0002] The present disclosure generally relates to charging control
technology, and more particularly, to a device, a system and a chip
for controlling charging, and a user terminal.
BACKGROUND
[0003] In actual applications, users usually charge their user
terminals until batteries are run out. If a user wants to use the
terminal just when battery is run out, the battery should be
charged to a voltage higher than the start voltage of the user
terminal in a short time.
[0004] Therefore, a device, a system and a chip for controlling
charging, and a user terminal are needed for improving charging
speed.
SUMMARY
[0005] The present disclosure provides a device, a system, and a
chip for controlling charging and a user terminal to improve
charging speed when a battery power is low.
[0006] In one embodiment, a device for controlling charging is
provided. The device for controlling charging may include: a
battery detection circuit, a charging control circuit, a charging
circuit and a charging interface circuit, wherein the charging
circuit is connected with a battery, the battery detection circuit,
the charging control circuit and the charging interface circuit
respectively, and is adapted for charging the battery and supplying
power to the battery detection circuit, the charging control
circuit and the charging interface circuit; the battery detection
circuit is connected with the battery, and is adapted for obtaining
a voltage value of the battery; the charging interface circuit is
connected with a charging power supply; and the charging control
circuit is connected with the battery detection circuit and the
charging interface circuit respectively, and is adapted for
transmitting a charging control signal for increasing a charging
current of the charging power supply through the charging interface
circuit when the battery detection circuit detects that the voltage
value of the battery is lower than a preset threshold value.
[0007] In some embodiments, the device for controlling charging
further includes a charging detection circuit, which is connected
with the charging circuit and the charging interface circuit, and
is adapted for obtaining working power supply from the charging
circuit, and obtaining a device type of the charging power supply
which is connected with the charging interface circuit.
[0008] In some embodiments, the charging control circuit is adapted
for, when the battery detection circuit detects that the voltage
value of the battery is lower than the preset threshold value,
transmitting the charging control signal for increasing the
charging current of the charging power supply to the charging
interface circuit based on the device type of the charging power
supply.
[0009] In some embodiments, the charging interface circuit is a USB
charging interface circuit.
[0010] In some embodiments, the charging detection circuit is
connected with a data line of the USB charging interface
circuit.
[0011] In some embodiments, the charging control circuit is
connected with a data line of the USB charging interface
circuit.
[0012] In some embodiments, the charging circuit is connected with
a power line of the USB charging interface circuit.
[0013] In some embodiments, the preset threshold value is a start
voltage of a system.
[0014] In one embodiment, a system for controlling charging is
provided. The system for controlling charging may include the
device for controlling charging as described above, and a charging
power supply connected with the device for controlling
charging.
[0015] In one embodiment, a chip for controlling charging is
provided. The chip for controlling charging may include the device
for controlling charging as described above.
[0016] In one embodiment, a user terminal is provided. The user
terminal may include: the device for controlling charging as
described above, a battery, a power management device and a
processor, wherein the device for controlling charging is connected
with the battery, and is adapted for controlling a charging process
of the battery; the battery is connected with the power management
unit, and is adapted for providing power for the power management
device; and the power management device is connected with the
processor, and is adapted for managing currents and voltages
provided by the battery based on a control signal of the
processor.
[0017] Embodiments of the present disclosure have following
advantages. The charging circuit supplies power for the battery
detection circuit, the charging control circuit and the charging
interface circuit. Namely, power of internal circuits of the device
for controlling charging is supplied by the charging circuit rather
than the battery. Therefore, even if the voltage of the battery is
lower than a preset threshold value, the device for controlling
charging can work properly, and the charging speed can be improved
by employing the charging interface circuit to increase the
charging current.
BRIEF DESCRIPTION OF THE DRAWINGS
[0018] FIG. 1 schematically illustrates a block diagram of a device
for controlling charging according to one embodiment of the present
disclosure;
[0019] FIG. 2 schematically illustrates a block diagram of a system
for controlling charging according to one embodiment of the present
disclosure;
[0020] FIG. 3 schematically illustrates a block diagram of another
system for controlling charging according to another embodiment of
the present disclosure; and
[0021] FIG. 4 schematically illustrates a block diagram of a user
terminal according to one embodiment of the present disclosure.
DETAILED DESCRIPTION
[0022] Inventors of the present disclosure found that, a software
system of the user terminal is often used to control charging in
the conventional technology. However, in a case of extremely low
battery power, the system of the user terminal cannot be started.
That is, the software system cannot control charging in this case.
Even if users need to use the user terminal immediately, the
charging speed cannot be improved before the system is started.
[0023] A device for controlling charging is provided in embodiments
of the present disclosure. A charging circuit is employed to supply
power to the device for controlling charging. That is, the power is
supplied by an external charging power supply but not the battery.
In this way, even if the power of the battery is extremely low, the
device for controlling charging can work properly to improve
charging speed, so that the voltage of the battery can reach the
start voltage immediately.
[0024] In order to clarify the objects, characteristics and
advantages of the disclosure, the embodiments of the present
disclosure will be described in detail in conjunction with the
accompanying drawings.
[0025] FIG. 1 schematically illustrates a block diagram of a device
for controlling charging according to one embodiment of the present
disclosure.
[0026] Referring to FIG. 1, the device for controlling charging 100
includes a battery detection circuit 120, a charging control
circuit 150, a charging circuit 110 and a charging interface
circuit 130.
[0027] The internal structure of the charging control device will
be described in conjunction with a system for controlling charging
shown in FIG. 2.
[0028] Referring to FIG. 2, in the device for controlling charging
100, the charging circuit 110 is connected with the battery 200 and
the charging interface circuit 130 respectively.
[0029] In one embodiment, the charging interface circuit 130 may be
connected with an external charging power supply 300. As such, by
using the external charging power supply 300, the charging circuit
110 can charge the battery 200 through the charging interface
circuit 130.
[0030] The charging circuit 110 may also be connected with the
battery detection circuit 120, the charging control circuit 150 and
the charging interface circuit 130, so as to supply power to the
battery detection circuit 120, the charging control circuit 150 and
the charging interface circuit 130 through the external charging
power supply 300.
[0031] It should be noted that, the power of the internal circuits
(the battery detection circuit 120, the charging control circuit
150 and the charging interface circuit 130) of the device for
controlling charging 100 is supplied by the charging circuit 110.
The device for controlling charging 100 can work properly even if
the voltage of the battery 200 is lower than a preset threshold
value. Therefore, the charging interface circuit 130 can increase a
charging current to improve the charging speed.
[0032] In some embodiments, when the voltage of the battery 200 is
equal to or higher than the preset threshold value, the power
supply of the internal circuits (the battery detection circuit 120,
the charging control circuit 150 and the charging interface circuit
130) of the device for controlling charging 100 may be switched to
the battery 200.
[0033] Referring to FIG. 2, the battery detection circuit 120 is
connected with the battery 200 in order to obtain a voltage value
of the battery 200.
[0034] The charging control circuit 150 is connected with the
battery detection circuit 120 and the charging interface circuit
130 respectively.
[0035] In some embodiments, when the battery detection circuit 120
detects that the voltage of the battery 200 is lower than the
preset threshold value, the charging control circuit 150 can
transmit a charging control signal for increasing the charging
current of the external charging power supply 300 through the
charging interface circuit 130.
[0036] In some embodiments, the charging interface circuit 130 may
be a USB charging interface circuit. Specifically, the charging
circuit 110 may be connected with a power line of the USB charging
interface circuit, so that the charging circuit 110 can be connect
with the external charging power supply 300 through the power line,
and can charge the battery 200 using the external charging power
supply 300.
[0037] The charging control circuit 150 may be connected with a
data line of the USB charging interface circuit. When the battery
detection circuit 120 detects the voltage of the battery 200 is
lower than the preset threshold value, the charging control circuit
150 may transmit the charging control signal for increasing the
charging current of the external charging power supply 300 through
the data line of the USB charging interface circuit. The charging
speed can be improved by increasing the charging current.
[0038] In some embodiments, the preset threshold value may be a
voltage value for starting the system of the user terminal. For
example, if the voltage value for starting the system is 2 V, the
preset threshold value is 2 V. When the voltage of the battery 200
is lower than 2 V, the charging control circuit 150 may transmit a
charging control signal for increasing the charging current of the
external charging power supply 300 through the data line of the USB
charging interface circuit to improve the charging speed.
[0039] In some embodiments, when the preset threshold value is a
voltage value for starting the system, and when the battery
detection circuit 120 detects the voltage of the battery 200
reaches the preset threshold value, the system can start properly.
Thus, the control of battery charging can be transferred from the
charging control circuit 150 to software programs of the system.
For example, when the voltage value for starting the system is 2 V,
the preset threshold value is set as 2 V. If the voltage of the
battery 200 is higher than the preset threshold value 2 V, the
system can start properly and users can use the system normally. At
this time, the software programs of the system can be used to
control the charging speed of the battery.
[0040] In some embodiments, the preset threshold value may be
higher than the voltage value for starting the system. For example,
the voltage value for starting the system is 2 V. If the voltage of
the battery is 2.5 V at the beginning of charging, which is higher
than the voltage value 2 V for starting the system, the system can
start properly and users can use the system normally. In this
circumstance, by setting the preset threshold value to be higher
than the voltage value for starting the system, the charging
control circuit 150 can still transmit the charging control signal
to increase the charging current of the external charging power
supply 300 to improve the charging speed. For example, assuming the
preset threshold value is set as 3 V, before the voltage of the
battery reaches 3 V, the charging control circuit 150 can be used
to transmit the charging control signal for increasing the charging
current of the external charging power supply 300 to improve the
charging speed. After the voltage of the battery 200 reaches the
preset threshold value 3 V, the software programs of the system can
be used to control the charging speed of the battery.
[0041] Referring to FIG. 3, in one embodiment of the present
disclosure, the device for controlling charging 100 may further
include a charging detection circuit 140.
[0042] The charging detection circuit 140 may be connected with the
charging circuit 110 to obtain working power from the charging
circuit 110.
[0043] The charging detection circuit 140 may also be connected
with the charging interface circuit 130, in order to obtain a
device type of the charging power supply 300 connected with the
charging interface circuit 130.
[0044] As described above, the charging interface circuit 130 is a
USB charging interface circuit, so that the charging detection
circuit 140 can be connected with the data line of the USB charging
interface circuit to obtain charging parameters of the charging
power supply 300 and thus to determine device type of the charging
power supply 300.
[0045] In some embodiments, the charging power supply 300 may be a
computer, a mobile power supply, etc.
[0046] It should be noted that, in actual applications, different
types of charging power supplies have different drive capabilities.
That is, ranges of charging currents and charging voltages supplied
by the different types of charging power supplies may be
different.
[0047] Therefore, when the voltage of the battery 200 is lower than
the preset threshold value, the charging control circuit 150
transmits the charging control signal to the charging interface
circuit 130 based on the device type of the charging power supply
300, in order to increase the charging current of the charging
power supply 300.
[0048] In some embodiments, the preset threshold value may be the
voltage value for starting the system. When the voltage of the
battery 200 is lower than the preset threshold value, the system
cannot be started. The charging detection circuit 140 can be used
to detect the type of the charging power supply 300, and then the
charging control circuit 150 can transmit different charging
control signals based on the type of the charging power supply 300
in order to improve the charging speed. When the voltage of the
battery 200 reaches the preset threshold value, the system can
start properly. The charging detection circuit 140 can be used to
detect the type of the charging power supply 300, and then the
software programs of the system can control the charging process
based on the type of the charging power supply 300.
[0049] In one embodiment of the present disclosure, a chip for
controlling charging is provided. The chip for controlling charging
includes the device for controlling charging 100.
[0050] In one embodiment of the present disclosure, referring to
FIG. 4, a user terminal is provided. The user terminal includes the
device for controlling charging 100, the battery 200, a power
management device 400 and a processor 500.
[0051] Specifically, the device for controlling charging 100 is
connected with the battery 200, and is adapted for controlling the
charging process of the battery 200. The battery 200 is connected
with the power management device 400, and is adapted for providing
power for the power management device 400. The power management
device 400 is connected with the processor 500, and is adapted for
managing currents and voltages provided by the battery 200 based on
a control signal of the processor 500.
[0052] In some embodiments, the user terminal may be a mobile
phone.
[0053] It should be understood by those skilled in the art that, a
part or all of the steps of the methods in embodiments of this
disclosure can be implemented by related hardware under instruction
of programs. The programs may be stored in a computer-readable
storage medium. The storage medium may include ROM, RAM, magnetic
disk, optical disk and etc.
[0054] Although the present disclosure has been disclosed above
with reference to preferred embodiments thereof, it should be
understood by those skilled in the art that various changes may be
made without departing from the spirit or scope of the disclosure.
Accordingly, the present disclosure is not limited to the
embodiments disclosed.
* * * * *